On Fri, 26 Feb 2021 at 17:08, Michal Arbet <michal.arbet at ultimum.io> wrote: > > Hi, > > I found that keepalived VIP switch cause TCP connections that refuse to die on host where VIP was before it was switched. > > I filled a bug here -> https://bugs.launchpad.net/kolla-ansible/+bug/1917068 > Fixed here -> https://review.opendev.org/c/openstack/kolla-ansible/+/777772 > Video presentation of bug here -> https://download.kevko.ultimum.cloud/video_debug.mp4 > > I was just curious and wanted to ask here in openstack-discuss : > > If someone already seen this issue in past ? > If yes, do you tweak net.ipv4.tcp_retries2 kernel parameter ? > If no, how did you solve this ? Hi Michal, thanks for the investigation here. There is a nice tool, that I found far too late, that helps to help answer questions like this: https://codesearch.opendev.org/ > > Thank you, > Michal Arbet ( kevko ) >